Wire-stretcher.



Patemd Apr. 2; |901.

A. uAvlsoN.

WIRE STRETCHER.

(Application Bled Ot. 20, 1897.)

2 Sheets-Sheet l.

l Il.

(N o Model.)

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No. 670,928. Patented Apr. 2', |901.

A. DAVISIJN.

WIRE STBETCHEB,

(Applicaion led Oct. 20, 1891'. .(No Model.) 2 Sheets--Shaet 2.

t stretcher is sustained.

ALBERT DAVISON, OF BELVIDERE, ILLINOS.

WIRE-STRETCHER.

SPECIFICATIN forming part of Letters Patent N o. 670,928, dated April 2, 1901.

Application filed October 20, 1897. Serial No. 655.865. .No modem 1'0 LZZ whom, it may concern:

Be it known that I, ALBERT DAvIsoN, a citizen ot' the United States, residing at Belvidere, in the county of Boone and State of Illinois, have invented certain new and useful Improvements in Vire-Stretchers, of which the following is a specification.

The object of this invention is to construct a wire-stretcher adapted more especially for linemens use in putting up electric wires, but is capable of use in setting up wire fences.

In the accompanying drawings, Figure 1 is a side elevation of my improved stretcher. Fig. 2 is a front elevation. Fig. 3 is a lengthwise vertical cent ral section. Fig. 4 is a transverse vertical central section. Fig. 5 is a plan view showingmeans for supporting and operating the stretcher. Fig. 6 is a section on dotted line o, 5.

The main supporting-frame consists of the side plates 1 and 2, connected by a cross-bar 3 at their rear edge. This cross-har is provided with two headed projections 4, which serve to form a connection with a clamp device for engaging a support by which the This clamp consists of a base-plate 5, having slots 6 terminating in enlarged ends of a size to permit the passage of the heads of the projections 4, thereby forming aconnection between the clamp and stretcher. From the base-plate extends an arm 7, supporting,r a bar 8, having its upper face provided with saw-toothed notches 9. Two jaws 10 and 11 are located on the bar 8, engaging the notches thereof and having their free ends 12 curving and provided with serrations. Each of the jaws has an arm J3, provided with serrations 14, which engage each other, thereby forming a connection between the jaws, as shown at Fig. 5. These jaws may he adjusted toward or from each other,also in theirconnection with the toothed bar, in order that their free ends may engage a support l5, which will support the stretcher. From the side plate 1 of the main frame eX- tends a single hook 1b' and double hook composed of the branches 17 and 13, and from the side plate 2 extends a hook 19.

In place of the clamp device described a chain may be used, and if connected to the hooks 16 and 18 and passed around a support the stretcher will be sustained thereby, or the chain may engage the hooks 17 and 19,

which will answer the saine purpose; but the stretcher will he supported at its side in the first instance and in the second instance at its rear end.

A shaft is supported centrally of the side plates, having its center portion 2O in square form, also its onter end 21, by means of which the shaft is turned when a crank is applied. This center portion of the shaft supports a serrated-faced wheel 22, having a disk 23 located on each side and extending beyond the face of the wheel. Two toothed wheels 24 and 25 are also supported by the shaft and are moved by it.

The stretcher shown in the drawings is of a double form-that is, two wires may be stretched at the same time in opposite directions-and as the mechanism isthe same for both, being a duplicate of one set, I will now describe one set.

To the side plates is secured a frame coniposed of the two serrated-faced plates 26 and 27, connected byastandard 2S, and branches 29, secured to the side plates. Each serratedfaced plate has ribs 30 extending theref-rom, forming a guide for the wire.

The side plate 1 has ears 31 extending from its outer face, and the top 32 has a hinged connection with these ears. A spring-catch 33 is connected with the top plate and engages the side plate 2, thereby connecting the parts. This top plate has perforated lugs 34, supporting a shaft 35, its center portion formed with a serrated-faced foot 36, overlying the serrated-faced plate 26. This shaft is provided with a length wise-extending feather 37. A disk 38 is located on the shaft, having two inwardly-extending projections 43, and is held in proper relation therewith by the feather connection. A dog arrangement forming a connection between the toothed wheel 24 and disk 33 consists of a yoke portion 39, having a shank 40, its upper end pivot-ally supporting a link 41, having projections 42, which interlock with the projections 43 `of the disk 3S. This link also has a recess, within which is located the feather 37 of the shaft 35, thereby forming a connection between the yoke portion and shaft 35. The branches of the yoke are adapted to enter the notches of the toot-hed wheel 24, supported by the shaft, and a double-ended spring 44 has its ends resting against the ends of the branches, as shown IOC in dotted lines, Fig. 3.

This spring atits center is connected to the shank 43, Vextending through the side plate l, having an -enlarged head 46. A disk 47 is located to slide on the shank outside of the side plate and is provided with a stud adapted to enter a series of holes, as shown at 48 and 49, Figs. l and 5, in relation to the duplicate set. A coilspring 50 surrounds the shank and presses against the disk, holding its stud in one of the holes. 1

The top plate 32 has a rim 5095, its upper outer surface being screw-threaded and its inner surface provided with two inwardlyprojecting studs 5l. A small serrated-faced wheel 52 is supported to revolve in a circular block 53, fitted to enter the opening of the rim O-l, and has lengthwise grooves 54, within which the studs 5l enter, forming a guide for the block. A cap 55 has a screw-threaded connection-rim and presses against the block 53, forcing the small serrated-faced wheel toward the large serrated-faced wheel.

In stretching one or more wires in the same direction the stretcher is secured to a suitable support by any of the means before described. The top plate is opened by reason of its hinge connection with the main frame. This movement will separate the serrated-faced wheels, also the serrated-faced foot from the serratedfaced plate. The wire is located over the plate and larger wheel and the top closed. The pressure of the smallserrated-faced wheel upon the wire and against the larger serratedfaced Wheel will be suflicient to draw the wire when the larger serrated-faced wheel is rotated ,by a suitable crank placed on the projection 2l,which will rotate the wheel 22 to the right and will revolve the wheel 52 to theleft. The yoke 39 will allow the toothed Wheel 24 to revolve with the wheel 22 until the Wire has been stretched, when a slight backward movement of the wheel 22 will also carry the toothed wheel 24 with it until the yoke engages one of the teeth of the wheel 24, which will rise upon the yokeI forcing down the foot 36, bringing it in contact with the wire, preventing the furthermovement of the wheel 22, and, consequently, holding t-he wire stretched. By turning the spring 44 so as to force the opposite end of the yoke in engagement with the toothed wheel the wire may be stretched in the opposite direction. I have not deemed it necessary to letter the parts constituting the duplicate of the parts just described, and it is evident that two wires may be stretched in opposite directions at the same time by the duplicate apparatus, the location of the wire being shown in the drawings. When two wires are stretched in opposite directions, the

-lower foot will operate in the same, manner by its yoke connection with its wheel. The foot simply limits the movement of the yoke, which limits the backward movement of the wheel 22.

A modification of the means for holding the small serrated-facedwheel against the larger serrated-faced wheel, as shown in the drawings, consists of the Wheel 56, having trunnions guided between the projections 57, extending from the lower plate 58, a ring 59, having projections 60, located over the trunnions, a spring 6l, pressing on the ring, and a cap 62, holding the spring inA position and secured to the lower plate. In this instance the small serrated-faced wheel is held against the main serrated-faced wheel by spring force, while in the main construction it is held positively.

I claim as my inventionl. In a wire-stretcher, the combination of a suitable support, a shaft held by the support in a manner to rotate, a main serrated-faced wheel mounted on the shaft, a serrated-faced wheel located in close proximity to the main wheel, between which wheels the wire is to be stretched, a notched disk located ou the shaft and rotatable therewith, a pivoted clamp and a connection between the notched disk and clamp.

2. In awire-stretcher, the combination of a suitable support, a shaft held by the support in a manner to rotate, a main serrated-faced wheel mounted on the shaft, a serrated-faced wheel located in close proximity to the main wheel,a notched disk rotatable with the shaft, a pivoted-clamp, a dog having a pivoted connection with the clamp and operated upon by the notched disk, and -a spring holding the dog in engagement with the disk.

3. In a wire-stretcher, the combination of a suitable support, a shaft held by the support in a manner to rotate, a main serrated-faced wheel 'mounted on the shaft, a serrated-faced wheel located in close proximity to the main wheel, means for adjusting its pressure toward the main serrated wheel, a notched disk rotatable with the shaft, a pivoted clamp, a pivoted branched dog engaging the clamp having one end in yoke form and located around the disk, and an adjustable spring in yoke form engaging the branches of the dog.

4. In a wire-stretcher, the combination of two side plates, two heads having pivoted connections with one of the side plates and detachable connections with the other side plate, a shaft supported by the side plates, a main serrated-faced wheel mounted on the shaft, a

serrated-faced wheel supported by each of the heads and located in close proximity to the main wheel, two pivoted clamps, two toothed disks, onelocated on each side of the main wheel and a dog for each toothed disk operating one of the clamps.

5. In a wire-stretcher, the combination of a supporting-frame for the operating mechanism, a rod secured to the frame and two heads having a sliding connection with the rod and an adjustable connection with each other.

ALBERT DAVISON.

Witnesses:

A. O. BEHEL, E. BEHEL.

lOO 

